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Timing or Person/ Frequency Monitoring Agency of Impact Mitigation Measure Requirements Responsible' Monitoring= 4.7-5 Water quality in Old River could 4.7-5 The impact of construction activities at the marina could be Monitoring during RWQCB: C be impacted by increased turbidity mitigated by completing as much excavation and levee construction. SJCFCE; and caused during construction of the construction as possible prior to breaching the Old River USACE proposed marina. levee. During levee breaching, a silt curtain should be installed within Old River to trap sediment carried into the river from the marina area. 4.7-6 Ultimate development of the 4.7-6 The design of building foundations and pavements should Review and approval SJCBD PC and C project site could cause a rise in consider the potential for adverse soil conditions caused by of designs. shallow groundwater levels as a high groundwater levels. Ilie designs should provide result of removal of subsurface adequate drainage and require appropriate bearing drains. capacities for proposed structures. The building. foundation. and pavement designs would be subject to review and approval by the San Joaquin County Building Department. 4.7-7 Discharge of treated or 4.7-7(a) Additional on-site reclamation opportunities should be Review at SP stage. SJCCDD SP untreated wastewater from the implemented to reduce the potential need for and proposed project to Old River wastewater discharge to Old River. SJCDPW could result in degradation of water quality within the River and South Delta waterways system. 4.7-7(b) An off-site reclamation system should be developed Review at SP stage. SJCCDD SP that is sized to meet as much wastewater as possible and up to the entire annual flow. Such a system should be SJCDPW Identified in the Specific Plan for the project. 4.7-7(c) If wastewater discharge were required, an application Review at PC stage. SJCCDD PC for the proposed discharge should be submitted for and consideration by the Central Valley Regional Water SJCDPW Quality Control Board prior to project construction. The RWQCB should consider the potential near-field and far-field impacts on water quality and potential future changes in the South Delta waterways circulation system. 'SJCCDD:San Joaquin County Community Development Department; SJC I3D:San.loaquin County Building Division;SJCDPW San Joaquin County Department of Public Works:USACF: U.S.Army Corps of Engineers; S.ICFCI-: San Joaquin County Flood Control Engineer; CSD:Community Services District(of project); RWQCB: Regional Water Quality Control Board;CDFG: Califnmiia 17epartrnent of Fish and Game:SJCEI ID:San Joaquin County Environmental I lcalth Dcparunent;DI IS:California Department of I lcalth Services;LAFCO:Local Agency Formation Commission. "those responsible would maintain monitoring records and verify compliance with mitigation measure. GPA: General Plan Amendment stage: SP: Specific Plan stage. PC: Pre-construction stage: (includes Tentative Map app;:oual or and Final Map approvals and other discretionary application approvals) r: Construction stage (prior to building permit issuance); O: Operational stage.